EP3947030B1 - Self-biasing recliner cross-talk tube coupler - Google Patents
Self-biasing recliner cross-talk tube coupler Download PDFInfo
- Publication number
- EP3947030B1 EP3947030B1 EP20735844.1A EP20735844A EP3947030B1 EP 3947030 B1 EP3947030 B1 EP 3947030B1 EP 20735844 A EP20735844 A EP 20735844A EP 3947030 B1 EP3947030 B1 EP 3947030B1
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- European Patent Office
- Prior art keywords
- coupler
- tube
- recliner
- shaft
- cross
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- 230000009977 dual effect Effects 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/225—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms
- B60N2/2251—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms with gears having orbital motion, e.g. sun and planet gears
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/235—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms
- B60N2/2356—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms with internal pawls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2205/00—General mechanical or structural details
- B60N2205/20—Measures for elimination or compensation of play or backlash
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2205/00—General mechanical or structural details
- B60N2205/50—Interlocking shaft arrangements transmitting movement between hinge mechanisms on both sides of a seat
Definitions
- the present invention relates to recliners for seats in automotive vehicles, and more particularly, to a self-biasing cross-talk tube coupler operatively coupled between a dual recliner assembly to bias a cross-talk tube in the under-biased condition.
- Automotive vehicles include seat assemblies for supporting occupants within the vehicle.
- a seat assembly typically includes a seat cushion and a seat back.
- a recliner assembly is operatively coupled between the seat cushion and seat back for allowing selective pivotal adjustment of the seat back relative to the seat cushion between a plurality of reclined positions.
- a seat assembly it is common for a seat assembly to include a dual recliner assembly, that is, an outboard master recliner and an inboard slave recliner.
- U.S. Patent No. 8,459,743 discloses one embodiment of a recliner.
- a cross-talk tube extends between master and slave recliners to synchronize movement of the recliners between the locked and unlocked positions.
- the cross-talk tube allows for both axial and rotational tolerances between the master and slave recliners.
- U.S. Patent No. 6,712,429 discloses one embodiment of a cross-talk tube in a dual recliner assembly.
- the master to slave release timing differences may result in one of two conditions.
- the slave recliner In the "over-biased" condition, the slave recliner is partially unlocked when the master recliner is in the fully locked position.
- the under-biased condition there is a delay between the unlocking of the master recliner and the unlocking of the slave recliner. Because the over-biased condition could give rise to potential safety problems, it is preferable to bias the cross-talk tube in the under-biased condition. Biasing the cross-talk tube requires several steps. In particular, a specific torque must be applied to the cross-talk tube in both the locking direction and the unlocking direction to ensure a minimum rotation angle. The cross-talk tube is then rotated in the locking direction until the under-biased angle is obtained.
- EP 0 407 265 A1 discloses an angular play-eliminating apparatus for hinge mechanisms as used in vehicle seats, these mechanisms consisting of nonreversible-planet mechanisms connected to each other by a link bar, with the link bar having on one of its parts a member with sets of teeth under the action of a spring which, when the link bar is in place between two cams of the hinge mechanisms, cause a rotation of these cams and of the planet wheels belonging thereto to eliminate the play due to manufacture and assembly in order to avoid any unexpected movement by the twisting of the seat back.
- a coupler for coupling a cross-talk tube of a vehicle seat with a shaft of a dual recliner assembly.
- the coupler comprises a generally cylindrical body extending axially between an inboard end and an outboard end.
- the inboard end includes an inboard aperture having an inboard planar surface.
- the outboard end includes an outboard aperture having an outboard planar surface. The inboard planar surface and the outboard planar surface transition from an axially offset position to an axially aligned position when the coupler is installed with the cross-talk tube and the shaft of the dual recliner assembly.
- a dual recliner assembly for a vehicle seat.
- the assembly comprises a first shaft, a second shaft, a cross-talk tube, and a coupler.
- the cross-talk tube has a first tube end and an opposite second tube end.
- the first tube end is fixedly coupled to the first shaft.
- the coupler has a first coupler end and an opposite second coupler end.
- the first coupler end is coupled to the second tube end.
- the first coupler end is twisted relative to the second coupler end.
- the first and second coupler ends are coupled to the second shaft.
- a method of assembling a cross-talk tube onto a dual recliner assembly for a vehicle seat using a coupler The cross-talk tube has a first tube end and an opposite second tube end.
- the coupler has a first coupler end and an opposite second coupler end.
- the dual recliner assembly includes a first recliner shaft and a second recliner shaft.
- the method comprises the steps of coupling the first coupler end with the second tube end, sliding the first tube end axially onto the first recliner shaft, sliding the second coupler end and the cross-talk tube axially onto the second recliner shaft, sliding the first coupler end and the cross-talk tube axially onto the second recliner shaft where the insertion of the second recliner shaft into the first coupler end causes the first coupler end and the cross-talk tube to twist relative to the second coupler end, and securing the first tube end onto the first recliner shaft.
- FIG. 1 illustrates one embodiment of a seat assembly 10 for use in an automotive vehicle.
- the seat assembly 10 includes a seat cushion 12 and a seat back 14 operatively coupled to the seat cushion 12 for supporting a seat occupant in a generally upright seating position.
- a dual recliner assembly 16 is operatively coupled between the seat cushion 12 and the seat back 14 for providing selective locking and pivotal adjustment of the seat back 14 relative to the seat cushion 12 between a plurality of reclined positions.
- the dual recliner assembly 16 includes a handle 18 to allow an occupant to manually actuate the dual recliner assembly 16.
- the dual recliner assembly 16 includes a first inboard recliner 20 spaced apart from a second outboard recliner 22.
- first and second recliners may refer to the outboard and inboard recliners, respectively, without altering the scope of the invention.
- Each of the inboard and outboard recliners 20, 22 is movable between a locked position, which holds the seat back 14 in a selected reclined position, and an unlocked position, which allows rotational movement of the seat back 14.
- the inboard recliner 20 has an inboard recliner shaft 24 that moves the inboard recliner 20 between the locked and unlocked positions
- the outboard recliner 22 has an outboard recliner shaft 26 that moves the outboard recliner 22 between the locked and unlocked positions.
- the outboard recliner shaft 26 is generally cylindrical and extends axially inward towards the inboard recliner 20.
- the inboard recliner shaft 24 extends axially outward towards the outboard recliner 22.
- the cross section of the inboard recliner shaft 24 is generally cylindrical with opposing and generally parallel planar sections 28, 30.
- the inboard recliner shaft 24 includes a tapered distal end 31.
- the inboard and outboard shafts 24, 26 are aligned axially along longitudinal axis A.
- the dual recliner assembly 16 also includes a self-biasing coupler 32 and a cross-talk tube 34.
- the self-biasing coupler 32 and the cross-talk tube 34 synchronize actuation of the inboard and outboard recliners 20, 22 between the locked and unlocked positions.
- the cross-talk tube 34 extends between an inboard end 36 and an opposite outboard end 38.
- the inboard end 36 is generally cylindrical and includes an opening 37 for receiving a portion of the self-biasing coupler 32.
- the inboard end 36 also includes a slot 40 extending in a longitudinal direction from the opening 37 toward the outboard end 38.
- the outboard end 38 of the cross-talk tube 34 is generally cylindrical and includes an opening 39 for receiving a portion of the outboard recliner shaft 26.
- the inboard end 36 of the cross-talk tube 34 is illustrated as having a diameter greater than the outboard end 38 of the cross-talk tube 34, it should be appreciated that the sizes of the various components of the dual recliner assembly 16 may vary without altering the scope of the invention.
- the self-biasing coupler 32 connects the inboard end 36 of the cross-talk tube 34 with the inboard recliner shaft 24.
- the self-biasing coupler 32 extends between an inboard end 42 and an opposite outboard end 44.
- the inboard end 42 of the self-biasing coupler 32 is generally cylindrical and includes an aperture 43 having opposing and generally parallel inner planar surfaces 46, 48.
- the outboard end 44 of the self-biasing coupler 32 also is generally cylindrical and includes an aperture 45 having opposing and generally parallel inner planar surfaces 50, 52.
- the planar surfaces 46, 48 of the inboard end 42 are axially offset from the planar surfaces 50, 52 of the outboard end 44 by an under-biased angle ⁇ .
- the under-biased angle ⁇ is less than 5°. More preferably, the under-biased angle ⁇ is approximately 2.5° ⁇ 0.5°.
- the outboard end 44 of the self-biasing coupler 32 includes a projection 56 extending in the longitudinal direction configured to matingly engage with the slot 40 of the cross-talk tube 34 when the outboard end 44 of the self-biasing coupler 32 is inserted into the inboard end 36 of the cross-talk tube 34.
- the inboard 42 and outboard ends 44 of the self-biasing coupler 32 are connected by circumferentially spaced apart legs 58 extending generally in the longitudinal direction and defining generally equally spaced apart rectangular windows 59 therebetween.
- the self-biasing coupler 32 may be made from any polymer.
- the outboard end 44 of the self-biasing coupler 32 is inserted into the inboard end 36 of the cross-talk tube 34 with the projection 56 matingly engaged with the slot 40.
- the outboard end 38 of the cross-talk tube 34 axially slides onto the outboard recliner shaft 26.
- the inner planar surfaces 46, 48 of the inboard end 42 of the self-biasing coupler 32 are aligned with the planar sections 28, 30 of the inboard recliner shaft 24, and the assembly of the self-biasing coupler 32 and the cross-talk tube 34 slide onto the inboard recliner shaft 24 as illustrated by arrow 60.
- the tapered distal end 31 of the inboard recliner shaft 24 engages the planar surfaces 50, 52 of the outboard end 44 and applies installation forces 64 on the planar surfaces 50, 52.
- the installation forces 64 cause the outboard end 44 of the self-biasing coupler 32 and the cross-talk tube 34 to twist relative to the inboard end 42 of the self-biasing coupler 32, as depicted by arrow 62.
- the self-biasing coupler 32 rotationally deforms at the legs 58, which form a weakened section of the self-biasing coupler 32.
- the outboard end 38 of the cross-talk tube 34 may be fixedly secured to the outboard shaft 26 by any suitable means, such as by welding or by crimping the tube 34 against the outboard shaft 26.
- the self-biasing coupler 32 synchronizes actuation of the recliner shafts 24, 26 through its deformation during the installation of the cross-talk tube 34 and the self-biasing coupler 32.
- the self-biasing coupler 32 is described and depicted as connecting the cross-talk tube 34 to the inboard recliner shaft 24, it should be appreciated that the self-biasing coupler 32 may connect the cross-talk tube 34 to the outboard recliner shaft 26 without altering the scope of the invention.
- the occupant operates the recliner handle 18 to rotate the outboard recliner shaft 26 and unlock the outboard recliner 22.
- the rotation of the outboard recliner shaft 26 rotates the cross-talk tube 34, the self-biasing coupler 32 and the inboard recliner shaft 24 to unlock the inboard recliner 20.
- the self-biasing coupler 32 biases the cross-talk tube 34 in the under-biased condition, there is a slight delay between the unlocking of the outboard recliner 22 and the unlocking of the inboard recliner 20.
- the seat back 14 can be pivotally adjusted between any of the potential reclined seating positions.
- the occupant may release the handle 18 to allow the outboard recliner shaft 26 to return to the locked position.
- the rotation of the outboard recliner shaft 26 to the locked position rotates the cross-talk tube 34, the self-biasing coupler 32 and the inboard recliner shaft 24 to lock the inboard recliner 20.
- the inboard and outboard recliners 20, 22 maintain the seat back 14 in the desired reclined position.
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Description
- This application claims priority to
U.S. provisional patent application No. 62/863,353, filed June 19, 2019 - The present invention relates to recliners for seats in automotive vehicles, and more particularly, to a self-biasing cross-talk tube coupler operatively coupled between a dual recliner assembly to bias a cross-talk tube in the under-biased condition.
- Automotive vehicles include seat assemblies for supporting occupants within the vehicle. A seat assembly typically includes a seat cushion and a seat back. Usually a recliner assembly is operatively coupled between the seat cushion and seat back for allowing selective pivotal adjustment of the seat back relative to the seat cushion between a plurality of reclined positions.
- It is common for a seat assembly to include a dual recliner assembly, that is, an outboard master recliner and an inboard slave recliner.
U.S. Patent No. 8,459,743 , discloses one embodiment of a recliner. Typically, a cross-talk tube extends between master and slave recliners to synchronize movement of the recliners between the locked and unlocked positions. The cross-talk tube allows for both axial and rotational tolerances between the master and slave recliners.U.S. Patent No. 6,712,429 , discloses one embodiment of a cross-talk tube in a dual recliner assembly. - Perfect release timing of the recliners between the locked and unlocked positions is difficult due to variances in recliner release positions and losses in the cross-talk tube. The master to slave release timing differences may result in one of two conditions. In the "over-biased" condition, the slave recliner is partially unlocked when the master recliner is in the fully locked position. In the "under-biased" condition, there is a delay between the unlocking of the master recliner and the unlocking of the slave recliner. Because the over-biased condition could give rise to potential safety problems, it is preferable to bias the cross-talk tube in the under-biased condition. Biasing the cross-talk tube requires several steps. In particular, a specific torque must be applied to the cross-talk tube in both the locking direction and the unlocking direction to ensure a minimum rotation angle. The cross-talk tube is then rotated in the locking direction until the under-biased angle is obtained.
- It is desirable to provide a simpler mechanism for biasing the cross-talk tube in the under-biased condition.
-
EP 0 407 265 A1 discloses an angular play-eliminating apparatus for hinge mechanisms as used in vehicle seats, these mechanisms consisting of nonreversible-planet mechanisms connected to each other by a link bar, with the link bar having on one of its parts a member with sets of teeth under the action of a spring which, when the link bar is in place between two cams of the hinge mechanisms, cause a rotation of these cams and of the planet wheels belonging thereto to eliminate the play due to manufacture and assembly in order to avoid any unexpected movement by the twisting of the seat back. - According to one embodiment, there is provided a coupler for coupling a cross-talk tube of a vehicle seat with a shaft of a dual recliner assembly. The coupler comprises a generally cylindrical body extending axially between an inboard end and an outboard end. The inboard end includes an inboard aperture having an inboard planar surface. The outboard end includes an outboard aperture having an outboard planar surface. The inboard planar surface and the outboard planar surface transition from an axially offset position to an axially aligned position when the coupler is installed with the cross-talk tube and the shaft of the dual recliner assembly.
- According to another embodiment, there is provided a dual recliner assembly for a vehicle seat. The assembly comprises a first shaft, a second shaft, a cross-talk tube, and a coupler. The cross-talk tube has a first tube end and an opposite second tube end. The first tube end is fixedly coupled to the first shaft. The coupler has a first coupler end and an opposite second coupler end. The first coupler end is coupled to the second tube end. The first coupler end is twisted relative to the second coupler end. The first and second coupler ends are coupled to the second shaft.
- According to another embodiment, there is provided a method of assembling a cross-talk tube onto a dual recliner assembly for a vehicle seat using a coupler. The cross-talk tube has a first tube end and an opposite second tube end. The coupler has a first coupler end and an opposite second coupler end. The dual recliner assembly includes a first recliner shaft and a second recliner shaft. The method comprises the steps of coupling the first coupler end with the second tube end, sliding the first tube end axially onto the first recliner shaft, sliding the second coupler end and the cross-talk tube axially onto the second recliner shaft, sliding the first coupler end and the cross-talk tube axially onto the second recliner shaft where the insertion of the second recliner shaft into the first coupler end causes the first coupler end and the cross-talk tube to twist relative to the second coupler end, and securing the first tube end onto the first recliner shaft.
- Advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:
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Figure 1 is a side view of a seat assembly incorporating an embodiment of the invention; -
Figure 2 is an exploded outboard perspective view of a dual recliner assembly according to one embodiment of the invention; -
Figure 3 is a side view of a self-biasing coupler according to one embodiment of the invention; -
Figure 4 is an inboard end view of the self-biasing coupler ofFigure 3 ; -
Figure 5 is a partial exploded inboard perspective view of the dual recliner assembly; -
Figure 6 is partial inboard perspective view of the dual recliner assembly before deformation of the self-biasing coupler; -
Figure 7 is a fragmentary perspective view of the self-biasing coupler ofFigure 6 ; -
Figure 8 is an inboard end view of the self-biasing coupler before deformation of the self-biasing coupler; -
Figure 9 is a partial inboard perspective view of the dual recliner assembly after deformation of the self-biasing coupler; -
Figure 10 is a fragmentary perspective view of the self-biasing coupler ofFigure 9 ; and -
Figure 11 is an inboard end view of the self-biasing coupler after deformation of the self-biasing coupler. -
Figure 1 illustrates one embodiment of aseat assembly 10 for use in an automotive vehicle. Theseat assembly 10 includes aseat cushion 12 and a seat back 14 operatively coupled to theseat cushion 12 for supporting a seat occupant in a generally upright seating position. Adual recliner assembly 16 is operatively coupled between theseat cushion 12 and theseat back 14 for providing selective locking and pivotal adjustment of theseat back 14 relative to theseat cushion 12 between a plurality of reclined positions. Thedual recliner assembly 16 includes ahandle 18 to allow an occupant to manually actuate thedual recliner assembly 16. - Referring to
Figure 2 , thedual recliner assembly 16 includes a firstinboard recliner 20 spaced apart from asecond outboard recliner 22. Although referred to respectively as the inboard and outboard recliners, it should be appreciated that the first and second recliners may refer to the outboard and inboard recliners, respectively, without altering the scope of the invention. Each of the inboard andoutboard recliners inboard recliner 20 has aninboard recliner shaft 24 that moves theinboard recliner 20 between the locked and unlocked positions, and theoutboard recliner 22 has anoutboard recliner shaft 26 that moves theoutboard recliner 22 between the locked and unlocked positions. Theoutboard recliner shaft 26 is generally cylindrical and extends axially inward towards theinboard recliner 20. Theinboard recliner shaft 24 extends axially outward towards theoutboard recliner 22. The cross section of theinboard recliner shaft 24 is generally cylindrical with opposing and generally parallelplanar sections inboard recliner shaft 24 includes a tapereddistal end 31. The inboard andoutboard shafts - The
dual recliner assembly 16 also includes a self-biasingcoupler 32 and across-talk tube 34. The self-biasingcoupler 32 and thecross-talk tube 34 synchronize actuation of the inboard andoutboard recliners cross-talk tube 34 extends between aninboard end 36 and an oppositeoutboard end 38. Theinboard end 36 is generally cylindrical and includes anopening 37 for receiving a portion of the self-biasingcoupler 32. Theinboard end 36 also includes aslot 40 extending in a longitudinal direction from theopening 37 toward theoutboard end 38. Theoutboard end 38 of thecross-talk tube 34 is generally cylindrical and includes anopening 39 for receiving a portion of theoutboard recliner shaft 26. Although theinboard end 36 of thecross-talk tube 34 is illustrated as having a diameter greater than theoutboard end 38 of thecross-talk tube 34, it should be appreciated that the sizes of the various components of thedual recliner assembly 16 may vary without altering the scope of the invention. - Referring to
Figures 2-4 , the self-biasingcoupler 32 connects theinboard end 36 of thecross-talk tube 34 with theinboard recliner shaft 24. The self-biasingcoupler 32 extends between aninboard end 42 and an oppositeoutboard end 44. Theinboard end 42 of the self-biasingcoupler 32 is generally cylindrical and includes anaperture 43 having opposing and generally parallel innerplanar surfaces outboard end 44 of the self-biasingcoupler 32 also is generally cylindrical and includes anaperture 45 having opposing and generally parallel innerplanar surfaces planar surfaces inboard end 42 are axially offset from theplanar surfaces outboard end 44 by an under-biased angle α. Preferably, the under-biased angle α is less than 5°. More preferably, the under-biased angle α is approximately 2.5°±0.5°. Theoutboard end 44 of the self-biasingcoupler 32 includes aprojection 56 extending in the longitudinal direction configured to matingly engage with theslot 40 of thecross-talk tube 34 when theoutboard end 44 of the self-biasingcoupler 32 is inserted into theinboard end 36 of thecross-talk tube 34. The inboard 42 and outboard ends 44 of the self-biasingcoupler 32 are connected by circumferentially spaced apartlegs 58 extending generally in the longitudinal direction and defining generally equally spaced apartrectangular windows 59 therebetween. The self-biasingcoupler 32 may be made from any polymer. - Referring to
Figures 2 and5 , during installation, theoutboard end 44 of the self-biasingcoupler 32 is inserted into theinboard end 36 of thecross-talk tube 34 with theprojection 56 matingly engaged with theslot 40. With the self-biasingcoupler 32 inserted into thecross-talk tube 34, theoutboard end 38 of thecross-talk tube 34 axially slides onto theoutboard recliner shaft 26. Referring toFigures 5-8 , the innerplanar surfaces inboard end 42 of the self-biasingcoupler 32 are aligned with theplanar sections inboard recliner shaft 24, and the assembly of the self-biasingcoupler 32 and thecross-talk tube 34 slide onto theinboard recliner shaft 24 as illustrated byarrow 60. Referring toFigures 3-5 , as the assembly of the self-biasingcoupler 32 and thecross-talk tube 34 continue to slide axially along theinboard recliner shaft 24, the tapereddistal end 31 of theinboard recliner shaft 24 engages theplanar surfaces outboard end 44 and appliesinstallation forces 64 on theplanar surfaces outboard end 44 of the self-biasingcoupler 32 and thecross-talk tube 34 to twist relative to theinboard end 42 of the self-biasingcoupler 32, as depicted byarrow 62. As a result, and as depicted inFigures 9-10 , the self-biasingcoupler 32 rotationally deforms at thelegs 58, which form a weakened section of the self-biasingcoupler 32. When theinboard recliner shaft 24 is fully inserted into the assembly of the self-biasingcoupler 32 and thecross-talk tube 34, the innerplanar surfaces outboard end 44 are aligned with the innerplanar surfaces inboard end 42, as depicted inFigure 11 . While this torque on the self-biasingcoupler 32 is maintained, theoutboard end 38 of thecross-talk tube 34 may be fixedly secured to theoutboard shaft 26 by any suitable means, such as by welding or by crimping thetube 34 against theoutboard shaft 26. - The twisting of the
outboard end 44 of the self-biasingcoupler 32 relative to theinboard end 42 of the self-biasingcoupler 32 biases thecross-talk tube 34 in the under-biased condition. Thus, the self-biasingcoupler 32 synchronizes actuation of therecliner shafts cross-talk tube 34 and the self-biasingcoupler 32. Although the self-biasingcoupler 32 is described and depicted as connecting thecross-talk tube 34 to theinboard recliner shaft 24, it should be appreciated that the self-biasingcoupler 32 may connect thecross-talk tube 34 to theoutboard recliner shaft 26 without altering the scope of the invention. - To adjust the seat back between a variety of reclined seating positions, the occupant operates the recliner handle 18 to rotate the
outboard recliner shaft 26 and unlock theoutboard recliner 22. The rotation of theoutboard recliner shaft 26 rotates thecross-talk tube 34, the self-biasingcoupler 32 and theinboard recliner shaft 24 to unlock theinboard recliner 20. Because the self-biasingcoupler 32 biases thecross-talk tube 34 in the under-biased condition, there is a slight delay between the unlocking of theoutboard recliner 22 and the unlocking of theinboard recliner 20. With both the inboard andoutboard recliners handle 18 to allow theoutboard recliner shaft 26 to return to the locked position. The rotation of theoutboard recliner shaft 26 to the locked position rotates thecross-talk tube 34, the self-biasingcoupler 32 and theinboard recliner shaft 24 to lock theinboard recliner 20. In the locked positions, the inboard andoutboard recliners - The invention has been described in an illustrative manner, and it is to be understood that the terminology, which has been used, is intended to be in the nature of words of description rather than of limitation.
- It is, therefore, to be understood that within the scope of the appended claims, the invention may be practiced other than as specifically described.
Claims (15)
- A coupler (32) for coupling a cross-talk tube (34) of a vehicle seat (10) with a shaft (24) of a dual recliner assembly (16), the coupler (32) comprising:a generally cylindrical body extending axially between an inboard end (42) and an outboard end (44);the inboard end (42) including an inboard aperture (43) having an inboard planar surface (46, 48); andthe outboard end (44) including an outboard aperture (45) having an outboard planar surface (50, 52);wherein the inboard planar surface (46, 48) and the outboard planar surface (50, 52) transition from an axially offset position to an axially aligned position when the coupler (32) is installed with the cross-talk tube (34) and the shaft (24) of the dual recliner assembly (16).
- The coupler (32) of claim 1 wherein when the inboard planar surface (46, 48) and the outboard planar surface (50, 52) transition to the axially aligned position, the outboard end (44) of the coupler (32) is twisted relative to the inboard end (42) of the coupler (32) by an under-biased angle (α).
- The coupler (32) of claim 2 further comprising a plurality of legs (58) extending between the inboard end (42) and the outboard end (44) wherein the plurality of legs (58) deforms when the inboard planar surface (46, 48) and the outboard planar surface (50, 52) transition to the axially aligned position.
- The coupler (32) of claim 3 further comprising a projection (56) extending from one of the inboard end (42) and the outboard end (44) adapted to matingly engage with a slot (40) in the cross-talk tube (34).
- A dual recliner assembly (16) for a vehicle seat (10) comprising:a first shaft (26);a second shaft (24);a cross-talk tube (34) having a first tube end (38) and an opposite second tube end (36), wherein the first tube end (38) is fixedly coupled to the first shaft (26); anda coupler (32) having a first coupler end (44) and an opposite second coupler end (42), wherein the first coupler end (44) is coupled to the second tube end (36), and wherein the first coupler end (44) is twisted relative to the second coupler end (42), and wherein the first and second coupler ends (42, 44) are coupled to the second shaft (24).
- The dual recliner assembly (16) of claim 5 wherein:the second shaft (24) comprises a planar section (28, 30);the first coupler end (44) comprises a first aperture (45) having a first planar surface (50, 52);the second coupler end (42) comprises a second aperture (43) having a second planar surface (46, 48); andthe first planar surface (50, 52) and the second planar surface (46, 48) align with the planar section (28, 30) of the second shaft (24).
- The dual recliner assembly (16) of claim 5 wherein:the second shaft (24) comprises generally parallel planar sections (28, 30);the first coupler end (44) comprises a first aperture (45) having generally parallel first surfaces (50, 52);the second coupler end (42) comprises a second aperture (43) having generally parallel second surfaces (46, 48); andthe first surfaces and the second surfaces (46, 48, 50, 52) align with the planar sections (28, 30) of the second shaft (24).
- The dual recliner assembly (16) of claim 7 wherein the first coupler end (44) is twisted by an under-biased angle (α) relative to the second coupler end (42).
- The dual recliner assembly (16) of claim 8 wherein the coupler (32) comprises a plurality of legs (58) extending between the first coupler end (44) and the second coupler end (42).
- The dual recliner assembly (16) of claim 9 wherein the second tube end (36) includes a slot (40) and wherein the first coupler end (44) includes a projection (56) to matingly engage with the slot (40) in the cross-talk tube (34).
- A method of assembling a cross-talk tube (34) having a first tube end (38) and an opposite second tube end (36) onto a dual recliner assembly (16) for a vehicle seat (10) using a coupler (32) having a first coupler end (44) and an opposite second coupler end (42), wherein the dual recliner assembly (16) includes a first recliner shaft (24) and a second recliner shaft (24), the method comprising the steps of:coupling the first coupler end (44) with the second tube end (36);sliding the first tube end (38) axially onto the first recliner shaft (24);sliding the second coupler end (42) and the cross-talk tube (34) axially onto the second recliner shaft (24);sliding the first coupler end (44) and the cross-talk tube (34) axially onto the second recliner shaft (24) wherein the insertion of the second recliner shaft (24) into the first coupler end (44) causes the first coupler end (44) and the cross-talk tube (34) to twist relative to the second coupler end (42); andsecuring the first tube end (38) onto the first recliner shaft (24).
- The method of claim 11 wherein the step of sliding the second coupler end (42) and the cross-talk tube (34) axially onto the second recliner shaft (24) comprises the steps of:aligning a second planar surface (46, 48) on a second aperture (43) in the second coupler end (42) with a planar section (28, 30) of the second recliner shaft (24); andinserting the second recliner shaft (24) into the second aperture (43).
- The method of claim 12 wherein the step of sliding the first coupler end (44) and the cross-talk tube (34) axially onto the second recliner shaft (24) comprises the steps of:engaging a tapered distal end (31) of the second recliner shaft (24) with a first planar surface (50, 52) on a first aperture (45) in the first coupler end (44); andusing the tapered distal end (31) to apply installation forces on the first planar surface (50, 52) to cause the first coupler end (44) and the cross-talk tube (34) to twist relative to the second coupler end (42).
- The method of claim 13 wherein the step of sliding the first coupler end (44) and the cross-talk tube (34) axially onto the second recliner shaft (24) further comprises the steps of:rotationally deforming the coupler (32) at a weakened section between the first coupler end (44) and the second coupler end (42); andaligning the first planar surface (50, 52) with the second planar surface (46, 48).
- The method of claim 14 wherein the step of coupling the first coupler end (44) with the second tube end (36) comprises the steps of:inserting the first coupler end (44) into the second tube end (36); andmatingly engaging a projection (56) on the first coupler end (44) with a slot (40) extending longitudinally along the second tube end (36).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201962863353P | 2019-06-19 | 2019-06-19 | |
PCT/US2020/070153 WO2020257821A1 (en) | 2019-06-19 | 2020-06-18 | Self-biasing recliner cross-talk tube coupler |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3947030A1 EP3947030A1 (en) | 2022-02-09 |
EP3947030B1 true EP3947030B1 (en) | 2023-07-12 |
Family
ID=71409610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20735844.1A Active EP3947030B1 (en) | 2019-06-19 | 2020-06-18 | Self-biasing recliner cross-talk tube coupler |
Country Status (5)
Country | Link |
---|---|
US (1) | US11951884B2 (en) |
EP (1) | EP3947030B1 (en) |
CN (1) | CN114340944B (en) |
CA (1) | CA3144488A1 (en) |
WO (1) | WO2020257821A1 (en) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2649051B1 (en) * | 1989-07-03 | 1991-10-04 | Cousin Freres Sa | DEVICE FOR RETRIEVING ANGULAR GAMES ON MECHANISMS USED IN SEATS, IN PARTICULAR, OF AUTOMOBILES |
JP4770067B2 (en) | 2001-06-07 | 2011-09-07 | トヨタ紡織株式会社 | Seat reclining device |
KR100446127B1 (en) * | 2002-03-14 | 2004-08-30 | 주식회사다스 | Reclining device of seat for vehicle |
US6712429B2 (en) * | 2002-06-07 | 2004-03-30 | Intier Automotive Inc. | Lost motion dual disc seat recliner assembly |
CA2506040C (en) * | 2005-05-02 | 2014-02-18 | Intier Automotive Inc. | A vehicle seat and a disc recliner therefor |
US20070039183A1 (en) * | 2005-08-17 | 2007-02-22 | Dagoberto Krambeck | Method of assembly and dual-sided seat recliner assembly |
JP4940637B2 (en) * | 2005-11-16 | 2012-05-30 | アイシン精機株式会社 | Vehicle seat reclining device |
KR100755650B1 (en) * | 2006-10-20 | 2007-09-04 | 주식회사다스 | Reclining device of seat back for vehicle |
US8251451B2 (en) * | 2007-01-17 | 2012-08-28 | Intier Automotive Inc. | Disc recliner assembly with biased synchronization |
CA2727953C (en) | 2008-08-22 | 2017-05-16 | Magna Seating Inc. | Disc recliner with reduced backlash |
DE102009015463B4 (en) * | 2009-03-28 | 2011-04-14 | Faurecia Autositze Gmbh | Tilt adjustment device for a vehicle seat |
JP5423192B2 (en) * | 2009-07-10 | 2014-02-19 | アイシン精機株式会社 | Vehicle seat reclining device |
CA2832350C (en) * | 2011-06-20 | 2019-07-30 | Magna Seating Inc. | Disc recliner with internal leaf springs |
JP5766584B2 (en) * | 2011-11-07 | 2015-08-19 | トヨタ紡織株式会社 | Vehicle seat |
CN104284801B (en) * | 2012-04-12 | 2016-09-07 | 麦格纳座椅公司 | Quickly regulate continuous engagement type recliner |
-
2020
- 2020-06-18 CN CN202080044816.8A patent/CN114340944B/en active Active
- 2020-06-18 EP EP20735844.1A patent/EP3947030B1/en active Active
- 2020-06-18 CA CA3144488A patent/CA3144488A1/en active Pending
- 2020-06-18 US US17/620,857 patent/US11951884B2/en active Active
- 2020-06-18 WO PCT/US2020/070153 patent/WO2020257821A1/en unknown
Also Published As
Publication number | Publication date |
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EP3947030A1 (en) | 2022-02-09 |
CA3144488A1 (en) | 2020-12-24 |
US11951884B2 (en) | 2024-04-09 |
CN114340944B (en) | 2023-08-15 |
US20220340053A1 (en) | 2022-10-27 |
WO2020257821A1 (en) | 2020-12-24 |
CN114340944A (en) | 2022-04-12 |
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